Vibrator or agitator



Oct. 9, 1928. v Y1;686,984 6.a. PlcKoP A VIBRATOR OR AGITATR 2 Sheets-Sheet 2 Filed Dec. 26, 1922 Patented @et i 9, 1928.

Unirse stares item4 PATENT ori-*ica GEORGE B. PICKOP, OF NEW HAVEN, CONNECTICUT, ASSIGNOR T MALLEABLE IRON LEITTIII'GS COMPANY, OF BRANFORD, CONNECTICUT.

VIBR-ATOR O R AGITATOB..

Application filed December 2c, 1922 Serial No. 609,037.

This invention relates to vibrators or agi,- tators, and more particularly toa device adapted to shake or agitate a screen or riddle which maj7 be used iior many purposes sii-cn 'as screening sand, mixing-paints or the like, or in connection with screening chutes or agitating dust collector screens. lhile I have chosen to illustratemy invention as applied to a. riddle or a screen device, ity'will of course be understood that it 1s `capable of broad application and is notlimited to the particular details or to use lin the pari ticular combination shown.

.ln the past, agitating' or vibrating devices of this general character have sometimes been provided with an overbalanced or eccentrically weighted rotating wheel, this wheel usually being driven by an electric motor mounted near the top of the frame, and to connect the rotor of the motor with the rotating` wheel it is necessary to arrange a shaft between these two members and connect it lieXibly with at least one thereof. is a general thing there is a great deal of dust and dirt around apparatus of this kind,

and the life of an electric motorA undersucli conditions is very short. `Moreover, the gyratory movement of the whole vibrator frame tends to wear out the bearings of the Vmotor and the maintenance ot" such a device is foundv to bemore or less expensive.

VOne object of my invention is to overcome the disadvantages referred to abovefand provide an agitator or. vibratorvwhich will be very simple in construction. and which will have zno parts liable tofbe seriously affected by the dirt or dust inc-ident to the operation of such a device.

Another object of my invention is to simplify devices of this character by providing for the use of the vibrator or overbalaneed wheel as the main power element.

Another object of my invention is to simplify devices of this character by applying the source oi vpower directly'to the vibrator or overbalanced rotor so that a separate motor or power device will be unnecessary.

Another object of my invention is to produce an agitator which will be more effective in operation than those Vheretofore made andv will at the same time be economical in operation and will have very few parts which will be subject to any wear in operation.

is a top plan view on line 5-5 of ith the riddle or screen removed;

is a sectional view on line 6-.6

Fig. 7 is a side elevational view ofa modii'ied form of my invention. Y y

In' the preferred formv 'of my inventionla pair oi vertically disposed rods 10 and 11 Vwhich are connected "attheir lower ends to a cylindrical drum or housing 12 open at the top and bottom. The upper ends of the rods ymay be Y`joined by. a link 13 which has an opening or perforation 14 so that it may suspended from a'hook or like supporting device 15.

- Within the cylindricall drum v12 secured Y a spiderv consisting of the three arms 16, 17

and 1 8, which carry, v-at the center of the drum, a bearing socket 19.

This bearing socket may,of course, be of any preferred form, and likewise may be supported within Athe frame by other means than thosefdeshoulder portions 23 and 24 to take care of the downward thrust incident tothe opera- -tion of the device. YA. cap 24a'may be provided upon this bearing socket to prevent the entry of dust thereintoand suitable packingmay ybe placed between theedge-of the To these and other ends the inventionv conplan'e oi this wheel is at right angles to they l i shaft 22 so that it lies in a generally horizontal position and the diameter of the wheel being substantially that of the inside of the cylindrical drum 12 s0 that the periphery of the wheel closely approaches the periphery of the drum. At one side the wheel is overweighted, at 27 In the form shown this is arrangedby casting the wheel with an eX- cess of metal at this point. It will be apn parent that when the wheel, constructed .in this way, is rotated, a gyratory motion will be imparted to the entire frame, which will produce an effective shaking` or vibrating acn tion upon the entire frame.

In the form of my invention illustrated, I have shown a riddle or screen 2S mounted in the upper part of the frame above the rotor. It will be apparent that in some aspects of the invention it is, of course, of no impor` tance, as to the relativepositions of the rotor and screen; that is to say. either one may be placed above the other. As shown, .the screen is arranged to overhang the edge of the cylindrical drum 12 and is secured in position by a ring or annulus 29 and a number of clamps 3U of any approved form. As has already been stated, I choose to make my vibrator or agitating member the main power element by applying my source of power or source of potential energy directly thereto. In the form of my invention shown, this is accomplished by providing the periphery of the rotor 26 with a series vof notches 81 forming blades 31a which notches may be shaped in the proper manner to cause the wheel to be freely driven when a fluid under pressure is directed upon the periphery of the'wheel through the nozzle 32 and hose 33. In foundry practice it will usually be preferable to drive the rotor by means of compressed air, although it will be obvious thatother sources of power may be used, if desired, without departing'from the principles of my invention. An apron 34;, as shown in Fig. 5, is mounted above the rotor adjacent the nozzle 32, to insure that the fluid which is emitted under pressure from the nozzle will be directed downwardly and will not be permitted to pass upwardly to interfere with theV material in the screen.

As shown in Fig. 6, the spokes or arms 35 Aof the rotor are inclined to the vertical so that there will betendency for them to create a downward draft to carry the screened particles in that direction. Also, when the spokes are fashioned in this way, it will be apparent that any particles which impinge against the blades will be deflected downwardly and not up against the screen.

Also the spokes of the wheel striking the screened material will throw it against the arms 16, 17 and 18 of the spider, and thus will break up any solid particles which may have gotten through the screen.

In Fig. 7 of the drawings I have shown a Lesaese device similar in many respects to that illustrated and described in connection with Figs. l to 6, but which is in addition provided with a second screen 37 below the vibrating rotor,"sol thatthe material will be passedl through the lower riddle as well as through the upper. rIhe screen 37 is placed against the lower edge of the cylindrical drum 12, a ring 29 is engaged with the turned-over loop at the upper edge of the screen, and

this ring is then clamped tothe drum by Y means of the clamps 30.

It is obvious that when the hose 33 is connected with a source of compressed air or a similar source of energy, the vibrating` rotor 26 will be caused to rotate at a relatively high speed. This rotor, being overbalanced,

that notwithstanding the efficiencyy of the' apparatus, it is composed yof comparatively few parts, practically none ofwhich is subject to excessive wear, and that there is no part ofthe mechanism whichv is likely to be seriously affected by the dust or dirt incident to the operation ofxthe device.

VJhile I have shown and described a preferred embodiment vof my invention, it will be understood that it is not to be limited to the details shown. but is capableof many modifications and variations within the spirit of the invention and within the scope of the appended claims.

Vhat I claim is: t

l. In an agitator, a frame, including a circular housing, an agitating rotor rotatablymounted within the housing having its periphery. formed to present blades and means to direct a fluid under pressure upon said blades and in a downward direction.

2.- In an agitator riddle,.a framehaving depending members, an overbalanced rotor mounted between said members upon a vertical axis and formed to present turbine blades, means to direct a motive iuid upon said blades to actuate the rotor yand shake the frame, and a riddle mounted on the frame.

3. In anagitator, a frame, including a circular housing,`an agitating rotor rotatably mounted within the housing having its periphery formed to present blades and means to direct a fluid under pressure upon said blades and in a downward direction, and an apron adjacent said means and above the rotor. Y

, 4f. A freely suspended riddle frame having depending supporting members and a housing carried thereby, a fluid pressure yrotor mounted upon a vertical axis between said members within the housino` said rotor bel by a lng overbalanced at one point, so that its rotation shakes the frame and riddle, and rotor being overbalanced to impart a gyrameans for securing a riddle to said liousinU. 5. In an agitator, a frame, including a circular housing, an agitating rotor rotatably mounted within the housing having its periphery formed to present blades andmea-ns to directfluid under pressure upon said blades and in a downward direction, a screen supported by the housing adjacent the rotor and an apron secured to the housing between the periphery of the rotor and the screen.

6. In an apparatus of the character described, a frame, a riddle or screen carried by said frame, and a rotating agitator wheel mounted in said frame below the screen, the spokes of said wheel bein0- inclined to create a downward draft.

7. A screening device comprisingv depending frame members, a rotorhousing carried between said frame meinbers,a rotor in said,-

housing provided with peripheral blades, and means to direct motive fluid upon the blades of said rotor, the rotor being overbalanced so as to vibratethe screen, and means to secure a screen to said housing.

8. A screening device comprising freely suspended depending frame members, a creen supported thereby, a rotor housing also supported between the frame members, an overbalanced rotor mounted within the housing, and means to direct a motive fluid against said rotor in a direction away from the screen. l y

9. A screening device comprising a Vfreely suspended franie,a screen mounted in the frame, a. rotor mounted in the frame in vertical algiiment with said screen, said rotor having a peripheral rim of a diameter substantially equal to that of the screen, turbine blades formed on said rim, and means to train a motive fluid against the rotor, said tory motion to the frame and screen.

10. In a screening device, a 'freely suspended frame, a screen carried thereby, a .rotor housing mounted on the frame having a .rotor therein provided with peripheral blades, means vfor training a motive fluid Y against said blades, and means to deflect said flu`d away from the screen.

ll. In a screening device, a freely suspended frame, a screen cairied thereby, a rotor housing mounted on the frame having a rotor therein provided with peripheral blades, and means for training a motive fluid against said blades in a direction away from the screen.

l2. In an apparatus of the characteryde" scribed, a freely suspended frame, a screen carried thereby, an open-ended 'drum carried by the frame, a spider mounted in said y drum and supportlng a. bearing, an overbalanced rotor mounted in said bearing, and:

aension thereof a rotor on said shaft said rotor having its peripheryformed to present turbine blades, said rotor having a peripheral rim of a diameter substantially equal to that of said screen, a weight carried on said rim, and means for training a motive fluid against the blades of the rotor to rotate the same and impart a gyratory movement to the frame.

In witness whereof, I have hereunto set my hand this th da of December, 1922.

GE non B. PioKoP 

